levels of governments—tests which no governments in this co other have fully met. The most urgent challenge of economic d the creation of more adequate political and social institutions resource commodities and maintaining a natural environment oi REFERENCES 1. Fisher, Joseph L., and Neal Potter, "Natural Resource Ade United States and the World," The Population Dilemn Hauser, ed. Englewood Cliffs, N.J.: Prentice Hall, 1969. 2. U.N. Food and Agriculture Organization, The State of Foot. ture 1968. Rome, 1968. pp. 176-177. 3. U.S. Department of Agriculture Economic Research Ser Regional Analysis Division, The World Food Budget 1970 1964. pp. 100-102. 4. U.N. Food and Agriculture Organization, Production Ye> Rome, 1959. p. 239. 5. U.N. Food and Agriculture Organization, The State of Foot ture 1961. Rome, 1961. p. 30. 6. U.N. Food and Agriculture Organization, The State of Foot ture 1966. Rome, 1966. p. 33. 7. U.N. Food and Agriculture Organization, Production Ye, Rome, 1968. 8. United Nations Demographic Yearbook 1967. New York, 1 9. United Nations Statistical Paper K-3, Compendium of Sc 1967. New York, 1967. Table 4. 10. United Nations, Statistical Yearbook 1968. New York, 19< 11. Pulp and Paper, " 1969 World Review Number," June 25, 1! 12. United Nations, Statistical Yearbook 1967. New York, 19(in the traditions, mores, and perceptions of longer-range social consequences. The structure and emphasis of religious beliefs may even have a bearing on the matter; certainly the sense of aesthetics is relevant. Much of this problem can be summarized by discovering how much awareness a particular group has of the requirements of ecological balance and the consequences of upsetting the balance by permitting an overload of waste residuals to be injected into the system.